I have the Authority tires from Wal-Mart in 31X10.5 15. I haven't used them yet but at my Wally World the price includes mounting. I have yet to run them and see how they work but they were cheap. I got all four for $325 out the door (long story - they ordered me some clearance tires from the warehouse that were $75 each. The tires came in and I told them I would not be able to make it in for a week or two to get them mounted. They said fine, they will hold them for 30 days. So I made an appointment and went in to get my tires. They couldn't find them... Looked in the system and someone sold them to someone else. I was pissed, but they gave me the same price on the Authoritys, but they punched in the wrong price on the price over-ride- manager put in $70 each instead of $75 each.). The tires I was going to get were the GY Tracker 2s I believe. Walmart is closing them out and will not longer have the Tracker 2s.

 

I have the cheap GY Wrangler Radials (235-75-r15) on my XJ right now. They were $55 each when I got mine but are now $70. They seem to do pretty decent especially in my muddy driveway.